package com.ww.myblog.web.admin;

import com.ww.myblog.po.Blog;
import com.ww.myblog.po.Tag;
import com.ww.myblog.po.User;
import com.ww.myblog.service.BlogService;
import com.ww.myblog.service.TagService;
import com.ww.myblog.service.TypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;

@Controller
@RequestMapping("/admin")
public class BlogController {
    private final static String INPUT = "admin/release";
    private final static String LIST = "admin/blogs";
    private final static String REDIRECT_LIST = "redirect:/admin/blogs";

    @Autowired
    private BlogService blogService;

    @Autowired
    private TypeService typeService;

    @Autowired
    private TagService tagService;

    @GetMapping("/blogs")
    public String blogs(@PageableDefault(size= 10 ,sort = {"updateTime"},direction = Sort.Direction.DESC) Pageable pageable,
                        Blog blog, Model model){
        model.addAttribute("types",typeService.listType());
        model.addAttribute("page",blogService.listBlog(pageable,blog));
        return LIST;
    }
    @PostMapping("/blogs/search")
    public String search(@PageableDefault(size= 10 ,sort = {"updateTime"},direction = Sort.Direction.DESC) Pageable pageable,
                        Blog blog, Model model){
        model.addAttribute("page",blogService.listBlog(pageable,blog));
        return "admin/blogs :: blogList";
    }

    @GetMapping("/blogs/input")
    public String input(Model model){
        // 博客新增页面
        setTypeAndTag(model);
        model.addAttribute("blog",new Blog());
        return INPUT;
    }

    @GetMapping("/blogs/{id}/input")
    public String editInput(@PathVariable Long id,Model model){
        // 博客修改
        setTypeAndTag(model);
        Blog blog = blogService.getBlog(id);
        blog.init();
        model.addAttribute("blog",blog);
        return INPUT;
    }
    private void setTypeAndTag(Model model){
        // 将标签传给前端
        model.addAttribute("tags",tagService.listTag());
        // 将类型传输给前端
        model.addAttribute("types",typeService.listType());
    }



    @GetMapping("/blogs/{id}/delete")
    public String delete(@PathVariable Long id, RedirectAttributes attributes){
        blogService.deleteBlog(id);
        attributes.addFlashAttribute("message","删除成功");
        return REDIRECT_LIST;
    }

    @PostMapping("/blogs")
    public String post(Blog blog, RedirectAttributes attributes, HttpSession session){
        blog.setUser((User) session.getAttribute("user"));
        blog.setType(typeService.getType(blog.getType().getId()));
        blog.setTags(tagService.listTag(blog.getTagIds()));

        if(blog.getId() == null){
            Blog b = blogService.saveBlog(blog);
        }else{
            Blog b = blogService.updateBlog(blog.getId(),blog);
        }
        attributes.addFlashAttribute("message","操作成功");
        return REDIRECT_LIST;

    }
}
